Model comparison
Gemini 2.5 Pro vs Kimi K2
Head-to-head evidence from 14 shared benchmark results across 7 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Gemini 2.5 Pro #70 (Supported); Kimi K2 #189 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemini 2.5 Pro and Kimi K2 share 14 comparable benchmark results. 1 of 8 categories are comparable. 10 results are unique to Gemini 2.5 Pro; 0 to Kimi K2.
Updated July 22, 2026- Shared results
- 14
- Gemini 2.5 Pro only
- 10
- Kimi K2 only
- 0
- Comparable categories
- 1 / 8
Pick Gemini 2.5 Pro if you want the stronger benchmark profile. Kimi K2 only becomes the better choice if mathematics is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 14 shared benchmark results across 7 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Gemini 2.5 Pro is clearly ahead on the BenchAlign aggregate, 57.25 to 27.19. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 2.5 Pro is also the more expensive model on tokens at $1.25 input / $10.00 output per 1M tokens, versus $0.60 input / $2.50 output per 1M tokens for Kimi K2. That is roughly 4.0x on output cost alone. Gemini 2.5 Pro gives you the larger context window at 1M, compared with 128K for Kimi K2.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Gemini 2.5 Pro | Δ | Kimi K2 |
|---|---|---|---|
| Math | Gemini 2.5 Pro11.6 | Margin→ 4.5 | Kimi K216.1 |
| Coding | Gemini 2.5 Pro63.8 | MarginNo overlap | Kimi K2Not measured |
| Knowledge | Gemini 2.5 Pro27.4 | MarginNo overlap | Kimi K2Not measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
FrontierMath v2 (Tiers 1-3)
MathA 14.138%B 21.404%Winner: Kimi K2Δ 7.3FrontierMath v2 (Tiers 1-3): Gemini 2.5 Pro scored 14.138%; Kimi K2 scored 21.404%. Kimi K2 wins this benchmark. - Source ↗
FrontierMath v2 (Tier 4)
MathA 4.167%B 0.000%Winner: Gemini 2.5 ProΔ 4.2FrontierMath v2 (Tier 4): Gemini 2.5 Pro scored 4.167%; Kimi K2 scored 0.000%. Gemini 2.5 Pro wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 2.5 Pro | Kimi K2 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 2.5 Pro$1.25 input / $10 output | Kimi K2$0.6 input / $2.5 output | Kimi K2 has the lower combined listed price. |
| Generation speedtokens per second | Gemini 2.5 Pro117 tok/s | Kimi K243 tok/s | Gemini 2.5 Pro has the higher measured throughput. |
| First-answer latencyseconds to first token | Gemini 2.5 Pro21.19 s | Kimi K21.51 s | Kimi K2 reaches the first token sooner. |
| Context windowmaximum listed tokens | Gemini 2.5 Pro1M | Kimi K2128K | Gemini 2.5 Pro lists the larger context window. |
Benchmark Deep Dive
Agentic5 benchmarks
Coding4 benchmarks
Reasoning2 benchmarks
Knowledge8 benchmarks
| Benchmark | Gemini 2.5 Pro | Kimi K2 | Result |
|---|---|---|---|
| GPQASource | 83% | — | Not comparable |
| HLESource | 18.8% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 25.8% | 19.4% | Gemini 2.5 Pro leads |
| AA-GPQA DiamondSource | 84.4% | 76.6% | Gemini 2.5 Pro leads |
| AA-HLESource | 21.1% | 7.0% | Gemini 2.5 Pro leads |
| AA-Omniscience IndexSource | -14.3% | -27.5% | Gemini 2.5 Pro leads |
| AA-Omniscience AccuracySource | 39.0% | 26.8% | Gemini 2.5 Pro leads |
| AA-Omniscience Hallucination RateSource | 87.4% | 74.2% | Kimi K2 leads |
MathKimi K2 wins2 benchmarks
Multimodal2 benchmarks
Inst. Following1 benchmarks
| Benchmark | Gemini 2.5 Pro | Kimi K2 | Result |
|---|---|---|---|
| AA-IFBenchSource | 48.7% | 41.5% | Gemini 2.5 Pro leads |
Frequently Asked Questions (2)
Which is better, Gemini 2.5 Pro or Kimi K2?
Gemini 2.5 Pro is ahead on BenchLM's BenchAlign leaderboard, 57.25 to 27.19. The biggest single separator in this matchup is FrontierMath v2 (Tiers 1-3), where the scores are 14.138% and 21.404%.
Which is better for math, Gemini 2.5 Pro or Kimi K2?
Kimi K2 has the edge for math in this comparison, averaging 16.1 versus 11.6. Inside this category, FrontierMath v2 (Tiers 1-3) is the benchmark that creates the most daylight between them.
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